Answer:
7, 3.5
Step-by-step explanation:
3x-1=20, 3x=21, x=7
2x+13=20, 2x=7, x=3.5
Answer:
Step-by-step explanation:
a) 2(3x - 1) = 40
Solution:
2×3x-2×1=40
6x-2=40
6x=40+2
6x=42
x=7
b) 4(2x + 13) = 80
Solution:
4×2x+4×13=80
8x+52=80
8x=80-52
8x=28
x=7/2
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