Question

solve

a) 7(2x-5)=63
b) 3(x-1)+6=12​

Answer 1

Answer:

$7(2x - 5) = 63 \\ \\ = > 14x - 35 = 63 \\ \\ = > 14x = 63 + 35 \\ \\ = > 14x = 98 \\ \\ = > x = \frac{98}{14} = 7$

2.

$3(x - 1) + 6 = 12 \\ \\ = > 3x - 3 + 6 = 12 \\ \\ = > 3x + 3 = 12 \\ \\ = > 3x = 12 - 3 = 9 \\ \\ = > x = \frac{9}{3} = 3$

Answer 2

Answer:

a) 7(2x-5)=63

2x-5=63/7=9

2x=9+5=14

x=14/2=7

b) 3(x-1)+6=12

3(x-1)=12-6=6

x-1=6/3=2

x=2+1=3