substraction of monomials: (-8ab) - 7ab, (-ab), (-15), (-15ab), ab, 15ab, substraction of monomials: 15mn - 16mn, -mn, -nm, nm, (zero), substraction of monomials: (-28) - (-10), 18, (-17), (-19), (-18), 17, substraction of monomials: (-13hi) - 7hi, 20hi, (-20hi), (-20), 20, 3, substraction of monomials: 20 - 18, (-38), 38, 38hi, find the area of this shape, 7cm², 14cm², 8cm², 6cm², find the area of this shape, 50cm², 50.24cm², 25.12cm², 8cm², find the area of this shape , 21, 21cm², 22cm², 19cm², 20cm², find the area of this shape, 40cm², 49, 49cm², 50cm², find the area of this shape, 28.26cm², 28cm², 28.26, 2, 29.26cm², find the area of this irregular shape, A1= 36cm², A2 = 24cm², = 60cm², A1= 36, A2 = 24, = 60, A1= 48cm², A2 = 24cm², = 72cm², A1= 36, A2 = 24, = 72, find the area of this irregular shape, A1=11, A2=15, 26, A1=30cm², A2=56cm², = 86cm², A1=11cm², A2=15cm², =26cm², find the area of this irregular shape, A1= 12cm², A2= 12cm², = 24cm², A1=12cm², A2 = 16cm², = 28cm², A1=12cm²,A2=10cm², =22cm², find the area of this irregular shape, A1=16cm²,A2=12cm²,=28cm², A1=18cm²,A2=12cm²,=30cm², A1=12cm²,A2=12cm², =24cm², find the area of this irregular shape, A1=12cm², A2=42cm², =54cm², A1=7cm², A2=13, = 20cm², A1=10cm², A2=40cm², = 50cm², equations: 5x = 25, x = 5, x = 2, x = 25, equations: x + 6 = 17, x = 12, x = 11, x = 5, x = 17, equations: x - 6 = 2, x = 2, x = 4, x = 6, equations: 6x = 36, x = 6, x = 30, x = 5, equations: x - 9 = 5, x = 5, x = 6, x = 4, (-15lk),3op,(-13iq) + 14lk,(-11iq),6op,4k (select the right answer), lk: lk, op:9, iq: (-24), k: 4, lk: lk, op:9, iq: 24, k: 4, lk: 1lk, op:9, iq: (-24), k: 4, (-4f),12t,2y +  (-11t),15y,5f, f:1f, y:17, f:16, f:f, y:7, f:27, f:f, y:17, f:17, 20yt,10u,(-13p),4j +  (-3u),(-6yt),5j,(-19p), yt:14, u:7, p:32, j:9, yt:14, u:8, p:32, j:8, yt:13, u:6, p:31, j:9, 14bj,(-19iq),14nm,(-16h) + (-4h),5iq,(-3nm),10bj, bj:24, iq:(-14), nm:11, h:(-20), bj:24, iq:(-14), nm:1, h:(-2), bj:24, iq:14, nm:-11, h:20, 18j,17u,(-13st),(-4id),19if, + (-15j),12u,4id,(-7st),(-14if), j:3, u:29 id:0 , st: (-20) if:4, j:2, u:29 id:id , st: 20 if:6, j:3, u:29 id: , st: (-20) if:5.

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