Answer:
1) 9
2) 125.4
Hope this helps :)
Explanation and Check part below.
Step-by-step explanation:
1. Isolate variable by dividing by 0.7 on both sides of equation.
6.3 = 0.7x
---- ------ <------ fraction bar, divide
0.7 0.7
9 = x ---> x = 9
2. Isolate variable by dividing by multiplying by 57 on both sides of equation.
2.2 = z ÷ 57
× 57 × 57
125.4 = z ----> z = 125.4
Check:
Substitute the variables with the solutions.
1) 6.3 = 0.7(9)
6.3 = 6.3 ✓
2) 2.2 = 125.4 ÷ 57
2.2 = 2.2 ✓
