Answer:
The equivalent expression to the given expression is the option B;
B. 6(7 + 15)
Step-by-step explanation:
The given expression is 42 + 90,
We note that an equivalent expression, is one that can be substituted by the original expression or one with equivalent value.
Therefore, we have, for the first expression;
A. 6 × (7 + 14) = 6 × 23 = 138
For the second option, we have;
B. 6 × (7 + 15) = 6 × 22 = 132
For the third option, we have;
C. 7 × (6 + 12) = 7 × 18 = 126
For the third option, we have;
D. 6 × (36 + 84) = 6 × 120 = 720
Also we note that the value of the given expression is 42 + 90 = 132, therefore, the equivalent expression to the given expression is option B. 6(7 + 15).
