1) 3(28а + b)-73a+8b при а+b=7; 2)3m + 35 n +8(3m-n) при m+n=4; 3)17(3c+5d)+6c-28d при c...

Question

1) 3(28а + b)-73a+8b при а+b=7;
2)3m + 35 n +8(3m-n) при m+n=4;
3)17(3c+5d)+6c-28d при c +d=2.

Answer 1

1)84а+3b-73a+8b
11a+11b=29
2)3m+35n+24m+8n
27m+43n=74
3)51c+85d+6c-28d
57c+57d=116