Question

RESOLVA Equação
1)2. 3(3 – m) + m = 7

2)4. 4 (10-x) = 20

Answer 1

1) 2*3(3-m) + m = 7

6(3-m) +m = 7

18-6m+m=7

11=5m

m=11/5

2)4*4(10-x)=20

16(10-x)=20

160-16x=20

16x=140

8x=70

4x=35

x=35/4