Answer:
x = 13/5
OR
x = 2.6
Step-by-step explanation:
Do the operations in the order BEDMAS (Brackets, exponents/roots, division/multiplication, addition/subtraction). Between each pair, like division/multiplication, the operations are not done in the order, but from left to right.
2(5x + 3) - 2 + 1 = 70 Distribute over brackets
10x + 6 - 2 + 1 = 70 Combine like terms
10x + 5 = 70 Subtract 5 from both sides.
10x = 65 Divide both sides by 10 to isolate x.
x = 65/10 Reduce to lowest terms by diving both numbers by 5.
x = 13/5 Answer as a fraction
x = 2.6 Answer in decimal form
If there was a bracket around (2+1) the answer would be 67/10.
Answer:
2(5x + 3) - 2+1 = 70
10x + 6 - 2 + 1 = 70
10x + 7 - 2 = 70
10x + 5 -5 = 70 - 5
10x = 65
10/10x = 65/10
x = 6.5
Step-by-step explanation:
2(5x + 3) - 2+1 = 70
10x + 6 - 2 + 1 = 70
10x + 7 - 2 = 70
10x + 5 -5 = 70 - 5
10x = 65
10/10x = 65/10
x = 6.5
