7(10)+11(11)+18(12)+15(13)+10(14)+4(15)+4(16)=x

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Solution for 7(10)+11(11)+18(12)+15(13)+10(14)+4(15)+4(16)=x equation:


Simplifying
7(10) + 11(11) + 18(12) + 15(13) + 10(14) + 4(15) + 4(16) = x

Multiply 7 * 10
70 + 11(11) + 18(12) + 15(13) + 10(14) + 4(15) + 4(16) = x

Multiply 11 * 11
70 + 121 + 18(12) + 15(13) + 10(14) + 4(15) + 4(16) = x

Multiply 18 * 12
70 + 121 + 216 + 15(13) + 10(14) + 4(15) + 4(16) = x

Multiply 15 * 13
70 + 121 + 216 + 195 + 10(14) + 4(15) + 4(16) = x

Multiply 10 * 14
70 + 121 + 216 + 195 + 140 + 4(15) + 4(16) = x

Multiply 4 * 15
70 + 121 + 216 + 195 + 140 + 60 + 4(16) = x

Multiply 4 * 16
70 + 121 + 216 + 195 + 140 + 60 + 64 = x

Combine like terms: 70 + 121 = 191
191 + 216 + 195 + 140 + 60 + 64 = x

Combine like terms: 191 + 216 = 407
407 + 195 + 140 + 60 + 64 = x

Combine like terms: 407 + 195 = 602
602 + 140 + 60 + 64 = x

Combine like terms: 602 + 140 = 742
742 + 60 + 64 = x

Combine like terms: 742 + 60 = 802
802 + 64 = x

Combine like terms: 802 + 64 = 866
866 = x

Solving
866 = x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x' to each side of the equation.
866 + -1x = x + -1x

Combine like terms: x + -1x = 0
866 + -1x = 0

Add '-866' to each side of the equation.
866 + -866 + -1x = 0 + -866

Combine like terms: 866 + -866 = 0
0 + -1x = 0 + -866
-1x = 0 + -866

Combine like terms: 0 + -866 = -866
-1x = -866

Divide each side by '-1'.
x = 866

Simplifying
x = 866

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